The muscles you can’t control are Cardiac
Answer:
The relationship between stress and illness is complex. The susceptibility to stress varies from person to person. Among the factors that influenced the susceptibility to stress are genetic vulnerability, coping style, type of personality and social support. Not all stress has negative effect. Studies have shown that short-term stress boosted the immune system, but chronic stress has a significant effect on the immune system that ultimately manifest an illness.
Answer: The frequency at which new species emerge and are lost over evolutionary time is established by the rates of speciation and extinction.
